Ribbon-spool for type-writing machines.



E. B. HESS & L. C. MYEBS. mason SPOOL ron TYPE WRITING MACHINES.

APPLICATION FILED NOV- 15 I913.

a ented 001.12, 1915.

WITNESSES n I ED sra'rns nrnn'r err-ion EDFJABD B. HESS .AND LEWIS cqmrnns, or BROOKLYN, NEW YORK, i ssroNons, BY MESNE ASSIGNMENTS, T ROYAL rrrnwnrrne COMPANY, me, or NEWv YORK,

N. Y., A. CORPORATION 'OF NEFJ YORK nI aBoN-sPooL FOR TYPE-WRITING MACHINES."

, Specification of Letters Patent.

inseam.

Patented Oct. 12, 1915.

Application filed November to, 1813. {Serial 110.803.,167.

T 0 all whom it may concern:

Be it known that we, EDWARD ll lines,- of

the borough of Brooklyn, county of Kings,

and State of New York, and LEWIS C. MY- s-nnsj-of the borough of Brooklyn, county of Kings, and State of New York, citizens of the United States of America, have jointly invented certain new and useful Improvements in Ribbon-Spools for Type-Writing Macl'iines, of which the'following is a specification.

This invention relates to movable, interk changeable ribbon spools for type writing machines, particularly adapted tobe used on 1'6 the well known Royal typewriting machine and especiallyinconjunction with the automatic reversing trip mechanism described and claimed in Letters Patent ot' Lewis G. Myers, No .,108 l656, 'granted'January 20, 201914. t

' The novel features of this ribbon spool will now be fully described, reference being had to the accompanying drawings,

which:

. 55 Figure 1 is aplan view of the complete spool; Fig. 2, a plan view showing the top plate and cap removed; Fig. 3, an underneath View of the spool; Fig. 4,.sb ows a side elevation of the spool mounted upon its vertical carrying shaft; Fig. 5, a vertical section of the Spool; Fig. 6, illustrates the cap in a partly finished condition; Fig. 7 ,shows the same finished; Fig. 8, a plan view of a disk with a plurality of openings or notches, I

85 carried bythe vertical spool shaft with which a pin depending from the bottonr flange of the spool is adapted to engage; Fig. 9, illustrates a ribbon leader adapted to be secured to thehub or core of the spool, and: Fig 10, illustrates a modification in the construction of the core. I

The spool consistsof atop plate 11, a bottom plate 12, a hollow hub or core 13 and a central bearing piece 14. It has also de- 15- pending from the bottom plate 12 a projection, as a drive pin 15, by which the spool is connected to a vertical drive shaft, and a spring actuated lever adapted to co-act with an operating partof an automatic spool reversing trip, as hereafter described.

. The hollow hub or core 13 isprovided with projer .ions 16 at each of its end three being shown, which enter'corresponoing openings i in the top and bottom plates arranged so that the hub 9r core i-s oo-axial with the plates, said pro3ect1ons being riveted over at the outersides' of the, plates and affording the only means by which the main parts of the tween the platesby the rigid connection afforded by the hollow core. This hollow core has a flat surface 17 to which the end of the ribbon may lee-attached, it generally being 7i) preferred to secure one end. of a ribbon leader 18'to said fiat surface by a large head, screw 19, which. screws into the central bearin'g piece 14 as shown-in Fig. 2. The head of this screw is rounded, so that when prop erly seated in place the contour of the cylindrical surface of theihollow core is main tained. To the, other end of the ribbon l leader 18 is attached acl'asp 20 adaptedto hold a ribbon. 5- x Another flattened portion or reces's'20fis formed on or in the cylindrical walloithehollow core 13 into which may pass then? per branch 21 of a trip lever when the tape the outer surface of this branchjbeing formed to maintain the circnlar contour of the core. The 'triplever isp ivotedito ears-22 formed downwardly from the bottom plate 12, and has a lower branch 23 substantially at right angles to the branch 21 and abdut parallel to the plate 12 when the branchfll v is he d within the circle ofthe core by the ribbon. Now when the branch 21 is released 1 from the pressure of the ribbon. the lower branch 23 is thrown downwardly'from the plate by torsional spring 24 and is then'in position, as the spool is rotated, to-act on a trip device of a spool reversingmechanisxn:

It is found advantageous to be ,rleadilyable to lock a removable spool, of theharacter described, in any circular position; ,on its carrying shaft, here shownas al vertical" i shaft 25, and not have to select any definite position for such lockingaction. ,With this end in view a plurality of openings, suitably 5 

